Telegraph-transmitter.



L. I. MOORE. TELEGRAPH TRANSMITTER. APPLICATION IILBD MAY 20, 1913. 1 098 959. Patented June 2, 1914.

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' TELEGRAPH TRANSMITTER.

APPLICATION FILED' MAY 20, 1913.

1,098,959, Patented June 2, 1914.

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W LlMoore I gyzgz/ LEO I. MOORE, OF LEGGE'IT, TEXAfi.

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Specification of Letters Patent.

Patented June 2, 1914.

Application filed May 20, 1913. Serial No. 768,781.

To all whom it may concern Be it known that l, LEO 1. Moon, a citizen of the United States, residing at Leggett, in the county of Polk and State of Texas, have invented new and useful l1nprovements in Telegraph-lransmitters, of which the following is a specification.

This invention relates to improvements in telegraph transmitting or sending instruments and has particular application to a transmitter of the pendulum type.

In carrying out the present invention, it is my purpose to provide a telegraph sender or transmitter of the class described wherein by means of independently operable keys the vibratory contact may be readily manipulated so that messages or signals may be transmitted in the form of dots and i dashes It is also my purpose to provide a telegraph sender which will embody among other features vibratory and stationary contacts and a pendulum for vibrating the vibratory contact, means being employed to hold the pendulum normally against movement and under the control of a key whereby such means may be released so that dots may be transmitted while, through the agency of a second key, the pendulum may be relieved of the influence of the holding means so that dashes may be transmitted.

Furthermore, I aim to provide a telegraph instrument wherein the holding means for the pendulum may be operated by either key independently of the other so that the pendulum may actuate the vibratory contact for the purpose of sending dots or dashes as the case may be.

A further object of the invention is the provision of a telegraph transmitting instrument which will embrace the desired features of simplicity, efficiency, durability and reliability, one wherein the signals may be transmitted rapidly and accurately and one which may be conveniently manipulated.

With the above and other objects in view, the invention consists in the construction, combination and arrangement of parts hereinafter set forth in and falling within the.

scope of the claims.

In the accompanying drawings, Figure 1 is a view in front elevation of a telegraph transmitter or sender constructed in accordance with the present invention. Fig. 2 is an end view thereof. Fig. 3 is an enlarged perspective view of the holding means for the pendulum. Fig. a is a vieu of the pivotal mounting for the dot key.

Referring now to the accompanying drawings in detail, the numeral 1 designates the base of the instrument, such base being constructed of any suitable material and of any desired configuration. llpstanding from the base 1 adjacent to one longitudinal edge thereof is a slab or panel 2 preferably, although not necessarily, composed of insulating material.

Fastened to the front face of the slab or panel 2 and projecting outwardly of such face is a bracket 3 electrically connected to a binding post 4t secured upon the rear face of the slab or panel and adapted to receive the terminal of one of the circuit wires. Depending from the bracket 3 and suitably fastened thereto is a vibratory spring 5 disposed in parallelism with the front face of the slab and equipped at an appropriate point with a contact 6 designed to coiiperate with a contact 7 adjustably mounted within a bracket 8 secured to the front face of the slab or panel at an appropriate distance below the bracket 8 and electrically connected with a binding post 9 fastened upon the rear side of the panel or slab.

It will be noted that the bracket 8 is disposed upon one side of the plane of the vibratory spring, while a bracket 10 is secured to the front face of the slab at the opposite side of the spring and carries an adjusting screw 11 adapted to engage the vibratory spring 5 for a purpose which will presently appear.

Extending outwardly from the front face of the slab or panel immediately below the bracket 3 is a support 12 while suspended from such support is a pendulum 13 capable of vibrating and interposed between the front face of the slab and the vibratory spring 5 anddisposed in parallelism with such face and spring. Suitably fastened to the bar of the pendulum 13 and extending laterally therefrom in proximity to the free end of the vibratory spring 5 is a clamp 14, in the present instance, of U-shape and designed to receive the lower extremity of the vibratory spring 5 so that when the pendulum vibrates a similar motion will be imparted to the spring whereby the contacts will be alternately engaged and disengaged. Suitably secured to the bar of the pendulum 13 adjacent to the lower end thereof and adjustable along the length of such bar are a number of pendulum weights 15 by means of which the action of the pendulum may be regulated. To the lower end of this vertically disposed pendulum is fastened a horizontally arranged latch bar 16 having the opposite ends thereof downturned as at 17. Suitably secured to the front face of the slab or panel adjacent to the lower end thereof is a substantially rectangular bear ing frame 18.

Disposed at the opposite sides of the path of movement of the pendulum and spaced apart in parallelism below the latter are vertical levers 19, 19 each fixed at its lower end upon a shaft 20 journaled in the opposite side members of the bearing frame 18. The upper extremity of each lever 19 is preferably forked or bifurcated as at 21 and pivoted within such bifurcated end of the lever is a dog 22 having the lower end thereof fastened to one extremity of a contractile spring 23, the free end of the latter being secured to a pin or the like 24 carried by the respective lever, the upper extremities of the dogs being adapted to engage the clownturned ends of the latch bar 16. In the present instance, the lower end of each lever 19 is formed with an outwardly projecting arm 25 each having pivoted to the free end thereof a depending link 26 interconnected through the medium of a horizontal link 27, while extending outwardly from the front face of the slab or panel 2 immediately adjacent to the base 1 is a pivot post 28 upon which is pivotally connected the inner end of a vertically movable key lever 29, the latter being connected between its ends through the medium of a connecting link 30 with the horizontal link 27 whereby, in the downward movement of the key lever 29 the vertical levers 19, 19 will be swung about their pivots in one direction. Contractile springs 31 each having one end fastened to one of the levers 19 and the opposite end thereof fastened to the slab or panel 2, such springs acting conjointly to restore the vertical levers to normal position when the key lever 29 is released.

Secured to the right hand edge of the slab or panel in Fig. 1 of the drawings is a pivot block 32 upon which is pivoted a horizontally movable key lever 33 connected through the medium of a link 34c with the right hand vertical lever 19. At the outer sides of the vertically disposed levers 19, 19 and preferably near the upper ends thereof are arranged brackets 35 suitably fastened to the front face of the slab and extending outwardly thereof and carrying adjusting screws 36 whereby the throws of the levers may be regulated.

The numerals 37, 37 designate adjusting screws carried by brackets 38- arranged at the sides of the levers opposite from the brackets 35. The adjusting screws 36 and 37 are preferably equipped with'bufi'ers 39 so that the movements of the levers under the action of the keys and springs will be cushioned.

The numeral 40 designates the usual switch by means of which the transmitter may be short circuited.

In practice, the dog 22 on the upper end of the right hand lever 19 engages the clownturned end on the right hand side of the latch bar 16 normally so as to hold the vibratory contact disengaged from the stationary contact, while the adjusting screw 11 is engaged with the vibratory spring 5 carrying the contact so as to regulate the throw of the pendulum. When it is desired to send a series of dots in succession, the horizontally movable key 33 is swung about its pivotal connection whereby the respective lever 19 is swung through the medium of the link 34 to release the latch bar on the lower end of the pendulum thereby permitting the latter to vibrate and so alternately open and close the circuit at the contacts. Should the signal or message being transmitted consist of a successive number of dots, the pendulum is permitted to vibrate until the predetermined number of dots have been transmitted at which time the horizontally movable lever is released whereby the dog reenters the path of movement of the downturned end of the latch bar and so prevents further vibrating of the pendulum and vibratory contact. On the other hand, when it is desired to send a number of dashes, the vertically movable key lever 29 is depressed and released whereby the pendulum will be permitted to swing back and forth under the control of the dogs, the downward move.- ment of the vertically movable key lever permitting the pendulum to swing to circuit closing position and under the influence of the dog carried by the vertical lever 19 at the left of Fig. 1, while the upward movement of such lever relieves the pendulum of the influence of such dog and permits the same to return to normal position.

It will be seen that I have provided a telegraph transmitting or sending instrument of the pendulum type whereby dots and dashes may be sent by individual key levers and wherein signals composed of dots and dashes may be readily transmitted by ma.- nipulating the key levers in accordance with the symbols constituting the signals.

While I have herein shown and described one preferred form of my invention by way of illustration, I wish it to be understood that I do not limit or confine myself to the precise details of construction herein described and delineated, as modification and variation may be made within the scope of the claims without departing from the spirit of the nv nt n I claim:

1. A telegraph transmitter comprising vibratory and stationary contacts, a vertically disposed pendulum for vibrating said vibratory contact, means disposed below said. pendulum and holding the same normally against movement, a key for releasing said means whereby dots may be transmitted, and a second key operable independently of the first key and adapted to release said means whereby dashes may be transmitted.

2. A telegraph transmitter comprising vibratory and stationary contacts, a vertically disposed pendulum for vibrating said vibratory contact, a latch bar on the lower end of said pendulum, levers disposed vertically and spaced apart in parallelism at opposite sides of the center line of the path of movement of said pendulum, each lever being pivoted at its lower end for swinging movement, dogs on the upper ends of said levers and adapted to engage said latch bar to hold said pendulum against swinging movement, and keys for manipulating said levers to release said pendulum whereby signals may be transmitted.

3. A telegraph transmitter comprising vibratory and stationary contacts, a vertically disposed pendulum for vibrating said vibratory contact, a latch bar on the lower end of said pendulum, levers disposed vertically and spaced apart in parallelism at opposite sides of the center line of the path of movement of said pendulum, each lever being pivoted at its lower end for swinging movement, dogs on the upper ends of said levers and adapted to engage said latch bar to holdsaid pendulum against swinging movement, a horizontally movable key for manipulating said levers to release said pendulum whereby dots may be transmitted, and a vertically movable key for manipulating said levers to release said pendulum whereby dashes may be transmitted.

4. A telegraph transmitter comprising vibratory and stationary contacts, a vertically disposed pendulum for vibrating said vibratory contact, a latch bar on the lower end of said pendulum, levers disposed vertically and spaced apart in parallelism at opposite sides of the center line of the path of move ment of said pendulum, each lever being pivoted at its lower end for swinging movement, dogs on the upper ends of said levers and adapted to engage said latch bar to hold said pendulum against swinging movement, a key connected to one of said levers for manipulating the same to release said pendulum whereby dots may be transmitted, means connecting said levers for simultaneous movement, and a second key connected to said means for operating said levers simultaneously whereby the pendulum may be operated for the transmission of dashes.

In testimony whereof I affix my signature in presence of two witnesses.

LEO I. MOORE. l/Vitnesses:

W. M. LYLE, W. P. HOLDER.

Copies of thin pntent may be obtained for five cents each, by addressing the Commissioner or ratants, Washington, D. G. 

